Improvement in pumps



T. DUWLING. Pumps.

Patented May 5,1874.

J f W C n .WJ F F Z l /T Je G 4. E .wd F k L 3 au C 7 .P d 2 y V y u ,mw |,.v A m 6, G r I F k1? um i V UNITED STATES THOMAS nownnve., OE GLOUCESTER, MASSACHUSETTS, ASSIGNOE To EIM` SELFVAND ISRAEL C. MAYO, OF SAME PLAGE.

IMPROVEMENT IN PUMPS.

Specification forming partof Letters Patent No. 150,544, dated'May 5, 1874; application filed v April 10, 1874.

To all whom it may concern:

Be it known that I, THOMAS DOWLING, of Gloucester, of the county of Essex and State of Massachusetts, have invented a new and useful Improvement in Pumps 5 and do hereby declare the Same to be fully described in the following specification and represented in the accompanying drawings, of which- Figure lis a side elevation 5 Fig.2, a longitudinal and vertical section taken through the educt, Fig. 3 is a vertical and transverse section taken on a plane at right angles with the plane of section of Fig. 2.

In such drawings, A. denotes the pump-barrel, provided with a nose or pipe, B. This nose has two mouths 'of discharge leading out of it, as shown at a and b. It is also provided with a valve, c, whose Stem screws into the end of the nose, so as to force the valve on or off a seat, d, in rear of the outer discharge a. The valve is to prevent, at times, when necessary, owage through the nose a.I and to cause the liquid elevated by the pump to be forced out of the nose b or up through a pipe leading therefrom. Over the barrel A is a rotary air chamber or vessel, C, which is inserted in a socketed head, D, fixed on the top of the pump-barrel, and formed as shown, especially with a circular lip, e, extending down from it, as represented, The head D contains an annulus or packing, a', upon which the lower edge of the airchamber rests, and against which it ilgforced by hooked screwrods f f and nuts g g. These rods hook upon the lip c, and extend up through ears h h projecting from the air-chamber, the whole being so as to enable the air-chamber to be turned around upon its Seat and clamped thereto, in order to adjust the pump-handle in. any de sirable position relatively to the educt, as occasion ina-y require. The said handle, Shown at E and formed as represented in top view in Fig. 4, and in side view in Fig. 5, (vin, with a tubular Shaft, t', a head, k, and arms Z m, one arm being projected from the head and the other from the shaft, all as shown) turns upon a spindle, F, extended through the parallel sides of a hollow projection, G, of the airchamber. At one end the spindle is provided with a screw, n, toreceive a nut, o, which screws against a leather washer, p., arranged on the spindle, as shown.

Fig. 6 is a section taken through the spindle and parts connected therewith.

The spindle iS provided with a shoulder, r, between which and the handle is a leather washer, s, there being also another leather washer, t, between the head lo and the Side of the extension G. On screwing up the nut o the spindle will be drawn inward and the washers will be constructed so as to make tight joints at the junction of the handle with the extension G of the air-vessel or chamber. Furthermore, the spindle is bent or formed with a leg, u, to extend into either of two socketed studs, c w, projected from the side of the extension G, one being above and the other below the spindle. A helical spring, c', wound around the spindle and having one end fixed thereto and the other to thc handle or a stud, fw', extending therefrom, serves to force downward the'longer arm of the handle and aid the handle in lifting the piston. This piston, not shown in the drawings, is to be like that of a common lifting-pump-that is, it is tobe perforated vertically and provided with one or more valves to open upward, there being below it, in thebarrel, a valve or valves to open upward. By turning the spindle around and setting it in one or the other of the socketed studs, we can take up or let out the spring so as to vary its pressure, and set the spindle so that the wear of the handle upon it may not be all on one side of it.

The peculiar construction of the pu1np-han dle enables it to be readily inserted in or withdrawn from the extension G, or the hole in one side thereof, as occasion may require.

In the said pump, I claim as my inventionl. The pump-barrel A, provided with the socketed head D and the lip e thereto, in combination with the rotary air-chamber G, and the hooked screw-rods j' f, and their nuts g g, and the handle E connected with the airchamber, all being arranged and applied substantially as set forth.

2. The pump-handle E, composed of the tubular shaft t', the head k, and the two arms lm,

arranged as described. j

3. The Spindle F, with its shoulder r, and leg u, and screw n, and nut o,in combination with ranged together :md with the air-vessel exthe handle E, as described, and with the socktension G, substantially as spccied.

eted studs o w projected from the air-chamber T extension G, as set;v forth, THOMAS DOWLD G' 4. [Elle spri11gg1?,.-combined with the pump- Witnesses:

hzmdlE and its supporting-spindle F, the R. H. EDDY,

leg u and socketcd studs o fw, all being zu- J. R. SNOW. 

